Search found 459 matches

by fibreweb
27 Aug 2020, 12:24
Forum: Announcements
Topic: Technician recognition
Replies: 14
Views: 4354

Re: Technician recognition

The Librarian gave a small bag of maltesers to each of the SASS staff with a Thank you note.
Nothing at all from the principal or any one else.
by fibreweb
07 Aug 2020, 13:46
Forum: Chemistry and Labware - General
Topic: Gratnell Storage system
Replies: 2
Views: 727

Gratnell Storage system

I have been told that my main store room is being reclaimed to make a large Math/Science staff room Its replacement is a room on the first floor up 17 stairs! :crazy: :crazy: I have other thoughts, claiming a long thin book room, and more storage in my Chemical store and renovating one of the other ...
by fibreweb
05 Feb 2020, 14:25
Forum: Recipes and Pracs
Topic: Eco friendly Baggie Science?
Replies: 10
Views: 3598

Re: Eco friendly Baggie Science?

Can you see the bubbles, colour change and feel the heat when it is done in a film canister?
by fibreweb
05 Feb 2020, 14:23
Forum: Biology, Physics...
Topic: Egg Incubator
Replies: 14
Views: 4413

Re: Egg Incubator

How does that fit into genetics, what on earth were they wanting to achieve
by fibreweb
25 Nov 2019, 09:51
Forum: Safety with Chemicals
Topic: Chemical waste bottles
Replies: 22
Views: 7479

Re: Chemical waste bottles

We have just had 52 KG of waste removed at a cost of $753 ($9/kg) The chemicals were all weighed in their bottles. My heavy metal wastes was all in together in 2 Winchesters If it is in multiple glass bottles you will be paying for that glass. When I weighed an empty glass Winchester it was 440gms. ...
by fibreweb
06 Nov 2019, 07:51
Forum: Recipes and Pracs
Topic: Iron(111)thiocyanate
Replies: 11
Views: 5251

Re: Iron(111)thiocyanate

We just used the ones I mixed last year with great success
by fibreweb
25 Oct 2019, 18:39
Forum: Forum Support Desk
Topic: Problems with AgNO3 solution
Replies: 8
Views: 7571

Re: Problems with AgNO3 solution

I realized once i had posted that obviously $100 for 25gm is $400 for 100. Stupid me.
by fibreweb
25 Oct 2019, 14:54
Forum: Forum Support Desk
Topic: Problems with AgNO3 solution
Replies: 8
Views: 7571

Re: Problems with AgNO3 solution

I think I should go into the Silver Nitrate black market.
I have been here 20 years and have NEVER purchased a new bottle of Silver nitrate.
I have 475gms of silver Nitrate still left
At $100 + for 25 gms I am sitting on a fortune!
Even at around $400 for 100gms its worth a lot. :w00t:
by fibreweb
18 Sep 2019, 14:26
Forum: Miscellaneous
Topic: HELP!!!! Presentation
Replies: 10
Views: 6353

Re: HELP!!!! Presentation

The bicarb reacts with the acidic Aluminium sulphate producing froth. The gelatine provides substance to the froth which rises reminiscent to elephant toothpaste
by fibreweb
21 Aug 2019, 15:51
Forum: Miscellaneous
Topic: Happy STAR week
Replies: 4
Views: 4064

Re: Happy STAR week

Had a wonderful surprise at lunchtime today A big bunch of flowers, card signed by all the Science Staff and a table full of food. This meant a huge amount to me. At the beginning of last year we had 5 new teachers, all in their late 20's early 30's. Two in their first positions. who all complained ...
by fibreweb
24 Jul 2019, 10:45
Forum: Sourcing Materials & Eq Repairs
Topic: Colorimeter
Replies: 2
Views: 2711

Re: Colorimeter

We have Labquest Data loggers and have the colorimeter that goes with them.
It gets used about twice a year and has worked well.
by fibreweb
30 May 2019, 15:38
Forum: Safety with Chemicals
Topic: School Uniforms
Replies: 16
Views: 6017

Re: School Uniforms

We have over 1000 students ranging in size from 150cm high and a size 4 to 190cm and XXXlarge We would need at least 250 individual lab coats to ensure that each student was wearing one whenever they had a prac. Where would they get stored Who would wash them At$22 each that's over $5,500 to purchas...
by fibreweb
22 May 2019, 14:48
Forum: Chemistry and Labware - General
Topic: Yr12 Chemistry depth study
Replies: 4
Views: 4188

Re: Yr12 Chemistry depth study

I am doing my SDS' from Chem Supply so thought while I was on the site to check for Nonanoic and Heptanoic acid.
Both appear to be available at a price of $39/$35 for only 25 mls.
My thought is too expensive for limited use
by fibreweb
17 May 2019, 11:07
Forum: Safety with Chemicals
Topic: Old drawers and asbestos
Replies: 5
Views: 3280

Re: Old drawers and asbestos

Could never find any actual documentation Worked well for me as they supplied tote trays instead of the drawers which are a lot lighter and stack better. we still have 50 odd of them under the lab benches holding the tripods, gauze mats Bunsen burners etc. They seem to have forgotten about them and ...
by fibreweb
17 May 2019, 11:04
Forum: Recipes and Pracs
Topic: Oil for separation and rusting pracs
Replies: 4
Views: 2893

Re: Oil for separation and rusting pracs

For rusting nails we use small 50ml specimen jars.
Oily ones get tossed and the others just get washed, if there is still a rust stain it doesn't matter as that is what the jar will be used for next time too.
These jars are invaluable for many other uses also
by fibreweb
29 Mar 2019, 08:55
Forum: Chemistry and Labware - General
Topic: chipped test tubes
Replies: 13
Views: 6053

Re: chipped test tubes

The only chipped rims that I have fixed has been on Burettes which are $20 + to replace
With test tubes, the cost time wise to fix is way dearer then a replacement test tube
by fibreweb
05 Dec 2018, 09:35
Forum: Sourcing Materials & Eq Repairs
Topic: Lab Quest Data loggers.
Replies: 2
Views: 2979

Lab Quest Data loggers.

Earlier this month I received a link from the company that I bought our Lab Quest Data loggers from to where I can get the latest updates. I have gone to the page with the update via the link I have downloaded the update and elected to "save" as it is suggested you save to a flash drive and then loa...
by fibreweb
05 Dec 2018, 09:28
Forum: Miscellaneous
Topic: Silver Nitrate
Replies: 6
Views: 3855

Re: Silver Nitrate

I'm keeping it for the next 20 years.
Not that I will be here that long, 2 years will see me out.
Hopefully we wont have to buy any for quite some time.
Pity it is the same with the amount of Potassium Dichromate, Potassium Chromate, Lead salts, mercury salts. etc.
There heaps of those also.
by fibreweb
03 Dec 2018, 14:17
Forum: Miscellaneous
Topic: Silver Nitrate
Replies: 6
Views: 3855

Silver Nitrate

Earlier today a teacher who had ordered Copper wire and Silver Nitrate solution for a displacement reaction asked me if the Silver Nitrate was expensive. I had absolutely no idea as I haven't had to buy any in the almost 20 years that I have been here due to the amount that was in the Chemical Store...
by fibreweb
21 Nov 2018, 08:43
Forum: Recipes and Pracs
Topic: Ethanol in Universal Indicator Solution
Replies: 6
Views: 3467

Re: Ethanol in Universal Indicator Solution

We go through over 4 litres of Universal indicator each year so I make my own rather than purchasing. Many years ago the lab assistant that I worked with ( that was back when there was one full time labby and one .8, now there is just me) decided to use Metho instead to cut costs. She got the correc...